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/*******************************************************************************
* Copyright (c) 2000, 2017 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.core.util;
import java.util.ArrayList;
import org.eclipse.jdt.core.IAnnotatable;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IMethod;
import org.eclipse.jdt.core.IOpenable;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.ITypeRoot;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.Signature;
import org.eclipse.jdt.core.WorkingCopyOwner;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.internal.compiler.util.SuffixConstants;
import org.eclipse.jdt.internal.core.*;
@SuppressWarnings({"rawtypes", "unchecked"})
public class JavaElementFinder extends BindingKeyParser {
private JavaProject project;
private WorkingCopyOwner owner;
public IJavaElement element;
public JavaModelException exception;
private ArrayList types = new ArrayList();
public JavaElementFinder(String key, JavaProject project, WorkingCopyOwner owner) {
super(key);
this.project = project;
this.owner = owner;
}
private JavaElementFinder(BindingKeyParser parser, JavaProject project, WorkingCopyOwner owner) {
super(parser);
this.project = project;
this.owner = owner;
}
@Override
public void consumeAnnotation() {
if (!(this.element instanceof IAnnotatable)) return;
int size = this.types.size();
if (size == 0) return;
IJavaElement annotationType = ((JavaElementFinder) this.types.get(size-1)).element;
this.element = ((IAnnotatable) this.element).getAnnotation(annotationType.getElementName());
}
@Override
public void consumeField(char[] fieldName) {
if (!(this.element instanceof IType)) return;
this.element = ((IType) this.element).getField(new String(fieldName));
}
@Override
public void consumeFullyQualifiedName(char[] fullyQualifiedName) {
try {
this.element = this.project.findType(new String(CharOperation.replaceOnCopy(fullyQualifiedName, '/', '.')), this.owner);
} catch (JavaModelException e) {
this.exception = e;
}
}
@Override
public void consumeLocalType(char[] uniqueKey) {
if (this.element == null) return;
if (this.element instanceof BinaryType) {
int lastSlash = CharOperation.lastIndexOf('/', uniqueKey);
int end = CharOperation.indexOf(';', uniqueKey, lastSlash+1);
char[] localName = CharOperation.subarray(uniqueKey, lastSlash+1, end);
IPackageFragment pkg = (IPackageFragment) this.element.getAncestor(IJavaElement.PACKAGE_FRAGMENT);
this.element = pkg.getClassFile(new String(localName) + SuffixConstants.SUFFIX_STRING_class);
} else {
int firstDollar = CharOperation.indexOf('$', uniqueKey);
int end = CharOperation.indexOf('$', uniqueKey, firstDollar+1);
if (end == -1)
end = CharOperation.indexOf(';', uniqueKey, firstDollar+1);
char[] sourceStart = CharOperation.subarray(uniqueKey, firstDollar+1, end);
int position = Integer.parseInt(new String(sourceStart));
try {
this.element = ((ITypeRoot) this.element.getOpenable()).getElementAt(position);
} catch (JavaModelException e) {
this.exception = e;
}
}
}
@Override
public void consumeMemberType(char[] simpleTypeName) {
if (!(this.element instanceof IType)) return;
this.element = ((IType) this.element).getType(new String(simpleTypeName));
}
@Override
public void consumeMethod(char[] selector, char[] signature) {
if (!(this.element instanceof IType)) return;
String[] parameterTypes = Signature.getParameterTypes(new String(signature));
IType type = (IType) this.element;
IMethod method = type.getMethod(new String(selector), parameterTypes);
IMethod[] methods = type.findMethods(method);
if (methods.length > 0)
this.element = methods[0];
}
@Override
public void consumePackage(char[] pkgName) {
pkgName = CharOperation.replaceOnCopy(pkgName, '/', '.');
try {
this.element = this.project.findPackageFragment(new String(pkgName));
} catch (JavaModelException e) {
this.exception = e;
}
}
@Override
public void consumeParser(BindingKeyParser parser) {
this.types.add(parser);
}
@Override
public void consumeSecondaryType(char[] simpleTypeName) {
if (this.element == null) return;
IOpenable openable = this.element.getOpenable();
if (!(openable instanceof ICompilationUnit)) return;
this.element = ((ICompilationUnit) openable).getType(new String(simpleTypeName));
}
@Override
public void consumeTypeVariable(char[] position, char[] typeVariableName) {
if (this.element == null) return;
switch (this.element.getElementType()) {
case IJavaElement.TYPE:
this.element = ((IType) this.element).getTypeParameter(new String(typeVariableName));
break;
case IJavaElement.METHOD:
this.element = ((IMethod) this.element).getTypeParameter(new String(typeVariableName));
break;
}
}
@Override
public void consumeModule(char[] moduleName) {
try {
this.element = this.project.findModule(new String(moduleName), null);
} catch (JavaModelException e) {
this.exception = e;
}
}
@Override
public BindingKeyParser newParser() {
return new JavaElementFinder(this, this.project, this.owner);
}
}
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